Pcs- Programming In C# Test For Aptech

65 Questions | By Vietha | Updated: Feb 20, 2023 | Attempts: 1929

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Pcs- Programming In C# Test For Aptech - Quiz

C# is here Variable of reference type store the memory address of other variables in a Stack.

Questions and Answers

1.

Variables of this data types store actual values.This value stored in a stack.
- A.
  
  Value Type
- B.
  
  Reference Type.
2.

Variable of reference type store the memory address of other variables in a Stack.
- A.
  
  True
- B.
  
  False
3.

The built-in reference data types are : - 2 choices
- A.
  
  Class
- B.
  
  Object
- C.
  
  Delegate
- D.
  
  Array , Interface
- E.
  
  String
4.

XML Comments begin with :
- A.
  
  Three forward slashes
- B.
  
  Three asterisks
- C.
  
  Double slashes
5.

Constants are declared for value types rather than for reference types.
- A.
  
  True
- B.
  
  False
6.

This statement ensure that no other process or threads running in the computer memory can interfere with the code. ensure security and only work with reference type.
- A.
  
  Selection statement
- B.
  
  Iteration statement
- C.
  
  Jump Statement
- D.
  
  Fixed Statement
- E.
  
  Lock Statement
7.

This statement is required to tell the garbage collector not to move that object during execution.
- A.
  
  Jump Statement
- B.
  
  Lock statement
- C.
  
  Fixed Statement
- D.
  
  Check ed and Unchecked Statement
8.

Which statements are true?
- A.
  
  The conditional operator works with two operands
- B.
  
  The increment operator works with a single operand
- C.
  
  The bitwise exclusive OR operator compares bits and return 1 if only one of the bits is -1.
- D.
  
  The conditional && operator does not check the seconds expression if the first expression is false
- E.
  
  The compound assignment operators execute from right to left.
9.

This typeCasting is carried out automatically by the compiler.
- A.
  
  Explicit
- B.
  
  Implicit
10.

The class which provides useful methods to convert any built-in data type to another built-in data type.
- A.
  
  System.Console.Convert
- B.
  
  System.Convert
11.

This refers to converting a reference type to a value type.
- A.
  
  Boxing
- B.
  
  UnBoxing
12.

This is a process for converting a value type to its reference type. this useful to reduce the overhead on the system during execution.
- A.
  
  UnBoxing
- B.
  
  Boxing
13.

This array is a multi-dimensional array and is reference to as an array of arrays.It considers of multiple arrays where the number of elements within each array can be different.
- A.
  
  Rectangular Array.
- B.
  
  Jagged Array.
14.

This has improved performance and unequal number of columns.
- A.
  
  Rectangular Array
- B.
  
  Single- dimensional Array
- C.
  
  Jagged Array
- D.
  
  Multi- dimensional Array
15.

This has many rows and columns.
- A.
  
  Multi- dimensional Array
- B.
  
  Single- dimensional Array
- C.
  
  Rectangular Array
- D.
  
  Jagged Array
16.

This allows you to create arrays using the CreateInstance() method.
- A.
  
  Array
- B.
  
  New
- C.
  
  Array class
17.

Method which is used to create Multi- Dimension Array
- A.
  
  Public static Array CreateInstance(type elementType, int length);
- B.
  
  Public static Array CreateArray(type elementType, int length);
- C.
  
  Public static Array CreateInstance(type elementType, int rows, int columns);
18.

This is the feature of extracting only the required information from object.It's not show all technical details of object.
- A.
  
  Encapsulation
- B.
  
  Inheritance
- C.
  
  Abstraction
- D.
  
  Polymorphism
19.

Details of what a class contains need not be visible to other classes and objects that use it.
- A.
  
  Encapsulation
- B.
  
  Inheritance
- C.
  
  Polymorphism
- D.
  
  Abstraction
20.

A method name can be an underscore or the "@" character.
- A.
  
  True
- B.
  
  Fasle
21.

This variable is a special type that is accessed without using an Object of a class.
- A.
  
  Public variable
- B.
  
  Protect variable
- C.
  
  Static variable
- D.
  
  Final
22.

This acces modifier allows the class members to be accessible within the class as well as within the derived class.
- A.
  
  Internal
- B.
  
  Protected
- C.
  
  Private
23.

This access modifier allows the class members to be accessible only within the classes of the same assembly.
- A.
  
  Protected
- B.
  
  Public
- C.
  
  Internal
24.

This keyword causes arguments to passed in a method by reference.- 2 choices
- A.
  
  Args
- B.
  
  Ref
- C.
  
  Reg
- D.
  
  This
- E.
  
  Out
25.

The keyword is used to resolve conflicts between variables having same names and to pass the current object as a parameter.
- A.
  
  Out
- B.
  
  This
- C.
  
  Ref